A glimpse back at simpler times, when everything could be solved with huge sirens in every city – “..a Chrysler Air Raid Siren, the most powerful siren in the world. It’s the size of a car, measuring near 12-feet in length and standing more than 6-feet tall. It also weighs twice as much as today’s typical car. This gigantic siren is powered by an 180-HP Chrysler Industrial V-8 HEMI gasoline engine. The super-duty engine directly drives a three-stage compressor that blows 2,610 cubic feet of air a minute, at nearly 7 PSI, into a giant siren rotor.” The ads about in it in the old magazines are wonderful – [via] Link & old advertising section here.